Ilia Denisov
106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
package local
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import (
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"crypto/rand"
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"encoding/base32"
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"fmt"
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"strings"
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"galaxy/user/internal/domain/common"
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"galaxy/user/internal/domain/entitlement"
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"galaxy/user/internal/domain/policy"
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)
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var base32NoPadding = base32.StdEncoding.WithPadding(base32.NoPadding)
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// IDGenerator creates opaque stable user identifiers and generated initial
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// race names.
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type IDGenerator struct{}
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// NewUserID returns one newly generated opaque user identifier.
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func (IDGenerator) NewUserID() (common.UserID, error) {
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token, err := randomToken(10)
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if err != nil {
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return "", fmt.Errorf("generate user id: %w", err)
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}
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userID := common.UserID("user-" + token)
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if err := userID.Validate(); err != nil {
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return "", fmt.Errorf("generate user id: %w", err)
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}
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return userID, nil
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}
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// NewInitialRaceName returns one generated race name in the `player-<shortid>`
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// form.
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func (IDGenerator) NewInitialRaceName() (common.RaceName, error) {
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token, err := randomToken(5)
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if err != nil {
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return "", fmt.Errorf("generate initial race name: %w", err)
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}
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raceName := common.RaceName("player-" + token)
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if err := raceName.Validate(); err != nil {
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return "", fmt.Errorf("generate initial race name: %w", err)
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}
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return raceName, nil
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}
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// NewEntitlementRecordID returns one generated entitlement history record
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// identifier.
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func (IDGenerator) NewEntitlementRecordID() (entitlement.EntitlementRecordID, error) {
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token, err := randomToken(10)
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if err != nil {
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return "", fmt.Errorf("generate entitlement record id: %w", err)
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}
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recordID := entitlement.EntitlementRecordID("entitlement-" + token)
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if err := recordID.Validate(); err != nil {
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return "", fmt.Errorf("generate entitlement record id: %w", err)
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}
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return recordID, nil
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}
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// NewSanctionRecordID returns one generated sanction history record
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// identifier.
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func (IDGenerator) NewSanctionRecordID() (policy.SanctionRecordID, error) {
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token, err := randomToken(10)
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if err != nil {
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return "", fmt.Errorf("generate sanction record id: %w", err)
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}
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recordID := policy.SanctionRecordID("sanction-" + token)
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if err := recordID.Validate(); err != nil {
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return "", fmt.Errorf("generate sanction record id: %w", err)
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}
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return recordID, nil
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}
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// NewLimitRecordID returns one generated limit history record identifier.
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func (IDGenerator) NewLimitRecordID() (policy.LimitRecordID, error) {
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token, err := randomToken(10)
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if err != nil {
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return "", fmt.Errorf("generate limit record id: %w", err)
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}
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recordID := policy.LimitRecordID("limit-" + token)
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if err := recordID.Validate(); err != nil {
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return "", fmt.Errorf("generate limit record id: %w", err)
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}
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return recordID, nil
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}
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func randomToken(size int) (string, error) {
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buffer := make([]byte, size)
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if _, err := rand.Read(buffer); err != nil {
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return "", err
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}
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return strings.ToLower(base32NoPadding.EncodeToString(buffer)), nil
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}
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